//
//  VisitorLoginView.swift
//  weibo
//
//  Created by mac on 15/12/14.
//  Copyright © 2015年 rong. All rights reserved.
//

import UIKit
//定义协议
@objc protocol VisitorLoginViewDelegate: NSObjectProtocol {
//声明协议方法 用户将要登录
    optional func userWillLogin()
    //用户将要注册
    func userWillRegister()
}
class VisitorLoginView: UIView {
//声明代理 代理要使用weak 属性关键字
    //swift属性默认都是strong 代理同样也需要使用weak
    weak var visitroViewDelegate: VisitorLoginViewDelegate?
    //对外提供设置访客视图信息的方法
    func setupInfo(tipText:String,imageName:String?) {
    tipLable.text = tipText
        if let name = imageName {
        //不是首页
            circleView.image = UIImage(named: name)
            //隐藏大房子
            largeIcon.hidden = true
            //将circleView移动到视图最顶层
            bringSubviewToFront(circleView)
        }else{
        //就是首页  就开始做动画
            startAnimation()
        }
    }
    private func startAnimation() {
    let anim = CABasicAnimation(keyPath: "transform.rotation")
        //设置动画属性
        anim.repeatCount = MAXFLOAT
        anim.duration = 20.0
        anim.toValue = 2 * M_PI
        //当动画完毕或者页面失去活跃状态动画不移除图层
        anim.removedOnCompletion = false
    }
    override init(frame: CGRect) {
        super.init(frame: frame)
        setupUI()
    }

    required init?(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    //设置所有的子视图
    private func setupUI() {
        addSubview(circleView)
        addSubview(backView)
        addSubview(largeIcon)
        addSubview(tipLable)
        addSubview(registerBtn)
        addSubview(loginBtn)
        //在使用手码添加约束 需要屏蔽frmae布局
        for subView in subviews {
        subView.translatesAutoresizingMaskIntoConstraints = false
        }
        addConstraint(NSLayoutConstraint(item: largeIcon, attribute: .CenterX, relatedBy: .Equal, toItem: self, attribute: .CenterX, multiplier: 1, constant: 0))
        addConstraint(NSLayoutConstraint(item: largeIcon, attribute: .CenterY, relatedBy: .Equal, toItem: self, attribute: .CenterY, multiplier: 1, constant: -60))
        //添加圆圈的约束
        addConstraint(NSLayoutConstraint(item: circleView, attribute: .CenterX, relatedBy: .Equal, toItem: largeIcon, attribute: .CenterX, multiplier: 1, constant: 0))
        addConstraint(NSLayoutConstraint(item: circleView, attribute: .CenterY, relatedBy: .Equal, toItem: largeIcon, attribute: .CenterY, multiplier: 1, constant: 0))
        //文字的约束
        addConstraint(NSLayoutConstraint(item: tipLable, attribute: .CenterX, relatedBy: .Equal, toItem: circleView, attribute: .CenterX, multiplier: 1, constant: 0))
        addConstraint(NSLayoutConstraint(item: tipLable, attribute: .Top, relatedBy: .Equal, toItem: circleView, attribute: .Bottom, multiplier: 1, constant: 16))
        addConstraint(NSLayoutConstraint(item: tipLable, attribute: .Width, relatedBy: .Equal, toItem: nil, attribute: .NotAnAttribute, multiplier: 1, constant: 230))
        addConstraint(NSLayoutConstraint(item: tipLable, attribute: .Height, relatedBy: .Equal, toItem: nil, attribute: .NotAnAttribute, multiplier: 1, constant: 40))
        //按钮的约束
        addConstraint(NSLayoutConstraint(item: loginBtn, attribute: .Left, relatedBy: .Equal, toItem: tipLable, attribute: .Left, multiplier: 1, constant: 0))
        addConstraint(NSLayoutConstraint(item: loginBtn, attribute: .Top, relatedBy: .Equal, toItem: tipLable, attribute: .Bottom, multiplier: 1, constant: 20))
        addConstraint(NSLayoutConstraint(item: loginBtn, attribute: .Width, relatedBy: .Equal, toItem: nil, attribute: .NotAnAttribute, multiplier: 1, constant: 100))
        addConstraint(NSLayoutConstraint(item: loginBtn, attribute: .Height, relatedBy: .Equal, toItem: nil, attribute: .NotAnAttribute, multiplier: 1, constant: 35))
        addConstraint(NSLayoutConstraint(item: registerBtn, attribute: .Right, relatedBy: .Equal, toItem: tipLable, attribute: .Right, multiplier: 1, constant: 0))
        addConstraint(NSLayoutConstraint(item: registerBtn, attribute: .Top, relatedBy: .Equal, toItem: tipLable, attribute: .Bottom, multiplier: 1, constant: 20))
        //If your equation does not have a second view and attribute, use nil and NSLayoutAttributeNotAnAttribute.
        addConstraint(NSLayoutConstraint(item: registerBtn, attribute: .Width, relatedBy: .Equal, toItem: nil, attribute: .NotAnAttribute, multiplier: 1, constant: 100))
        addConstraint(NSLayoutConstraint(item: registerBtn, attribute: .Height, relatedBy: .Equal, toItem: nil, attribute: .NotAnAttribute, multiplier: 1, constant: 35))
        
        //设置背景视图的约束 可视化的布局语言
        //OC 中可选项 一般使用 按位 或枚举选项  swift中直接指定数组
        //metrics:约束数值字典 [String: 数值],
        addConstraints(NSLayoutConstraint.constraintsWithVisualFormat("H:|-0-[backView]-0-|", options: [], metrics: nil, views: ["backView": backView]))
        
        addConstraints(NSLayoutConstraint.constraintsWithVisualFormat("V:|-0-[backView]-(-35)-[regBtn]", options: [], metrics: nil, views: ["backView": backView,"regBtn":registerBtn]))
        //设置视图的背景颜色
        backgroundColor = UIColor(white: 0.93, alpha: 1)
        //添加点击事件
        registerBtn.addTarget(self, action: "registerBtnDidClick", forControlEvents: .TouchUpInside)
        loginBtn.addTarget(self, action: "loginBtnDidClick", forControlEvents: .TouchUpInside)
        
    }
    //按钮的监听事件
    @objc private func registerBtnDidClick() {
    //代理调用协议方法 如果为nil 就不会执行方法
        visitroViewDelegate?.userWillRegister()
    }
    @objc private func loginBtnDidClick() {
    //判断代理是否为空&& 是否响应方法 userWillLogin? 表示的是判断是否可以响应方法
        visitroViewDelegate?.userWillLogin?()
    }
    //懒加载所有的子视图
    private lazy var backView: UIImageView = UIImageView(image: UIImage(named: "visitordiscover_feed_mask_smallicon"))
    private lazy var largeIcon: UIImageView = UIImageView(image: UIImage(named: "visitordiscover_feed_image_house"))
    private lazy var circleView: UIImageView = UIImageView(image: UIImage(named: "visitordiscover_feed_image_smallicon"))
    private lazy var tipLable: UILabel = UILabel(title: "关注一些人，回这里看看有什么惊喜,关注一些人，回这里看看有什么惊喜", color: UIColor.darkGrayColor(), fontSize: 14)
    private lazy var registerBtn: UIButton = UIButton(title: "注册", backImageName: "common_button_white_disable", fontSize: 15, color: themeColor)
    private lazy var loginBtn: UIButton = UIButton(title: "登录", backImageName: "common_button_white_disable", fontSize: 15, color: themeColor)
}
